Control of W-ECO MULTI SYSTEM
3
TD831077
III - 30
2. Optional Controller (remote controller)
Thermistor
fault
Protective
device for
comp. is
activated
Indoor thermistor is either open
or damaged.
Outdoor thermistor is either
open or damaged.
Comp. CT detection current
fault
Protective device for PC comp.
is activated.
Protective device for AC comp.
is activated.
Protective device for SC comp.
is activated.
Low oil level.
Oli sensor fault.
Indoor coil temp. sensor (Sensor no. 03, TH2)
Indoor coil temp. sensor (Sensor no. 04, TH3)
Indoor coil temp. sensor (Sensor no. 05, TH4)
Indoor suction air (room) temp. sensor (Sensor no. 02, TH1)
Indoor discharge air temp. sensor (Sensor no. 06, TH5)
PC. comp. discharge gas temp. sensor (Sensor no. 0A, TH1)
AC. comp. discharge gas temp. sensor (Sensor no. 0b, TH2)
Outdoor no. 1 coil gas temp. sensor
(Sensor no. 0D, TH7: PC unit/1D, TH4: AD unit)
Outdoor no. 1 coil liquid temp. sensor
(Sensor no. 0E, TH4: PC unit/1E, TH2: AD unit)
Outdoor air temp. sensor (Sensor no. 11, TH9: PC unit/21, TH5: AD unit)
SC comp. discharge gas temp. sensor
(Sensor no. 17, TH3: PC unit/27, TH1: AD unit)
Outdoor no. 2 coil gas temp. sensor (Sensor no. 0F, TH8)
Outdoor no. 2 coil liquid temp. sensor (Sensor no. 10, TH5)
Outdoor coil temp. sensor (Sensor no. 0C, TH6: PC unit/1C, TH3: AD unit)
Current is detected when compressor is OFF (SC comp.)
(Sensor no. 18: PC unit/28: AD unit)
Current is detected when compressor is OFF (PC comp.)
(Sensor no. 13)
Current is detected when compressor is OFF (AC comp.)
(Sensor no. 14)
Overload current is detected.
Lock current is detected.
Current is not detected when comp. is ON.
Magnetic contactor (MgSW) is chattering.
Overload current is detected.
Lock current is detected.
Current is not detected when comp. is ON.
Magnetic contactor (MgSW) is chattering.
Low pressure switch is activated.
Overload current is detected.
Lock current is detected.
Current is not detected when comp. is ON.
Improper installation of discharge temp. sensor.
Magnetic contactor (MgSW) is chattering.
PC comp. oil sensor
SC comp. oil sensor
EEP ROM on indoor P.C.B. failure
Alarm
message
<<F1>>
<<F2>>
<<F3>>
<<F10>>
<<F11>>
F4
F5
F6
F7
F8
F22
F23
F24
F25
F21
F27
F28
F29
H01
H02
H03
H09
H11
H12
H13
H19
H06
H21
H22
H23
H25
H29
H07
H08
H28
Possible cause of malfunction
Indoor or outdoor unit is not operating correctly.
Mis-wiring of control wiring between indoor unit, outdoor unit and
system controller.
Indoor or outdoor unit is not operating correctly.
Mis-wiring of control wiring between indoor unit, outdoor unit and
system controller.
CN1 is not connected properly.
* When using wireless remote controller or system controller, in
order to check the alarm message in detail, connect wired
remote controller to indoor unit temporarily.
Error in transmitting serial
communication signal.
Error in receiving serial commu-
nication signal.
Protective device of sub indoor
unit in group control is activated.
Serial commu-
nication errors
Mis-setting
Activation of
protective
device
C05
C06
P30
Alarm messages displayed on system controller
NOTE
1. Alarm messages in << >> do not affect other indoor unit operations.
2. Alarm messages in < > sometimes affect other indoor unit operations depending on the fault.
●
CCU
:
Command control unit (incorporated in outdoor unit)
●
PC unit
:
Power control unit
●
AD unit
:
Additional unit
●
PC comp. :
Power control compressor
●
AC comp. :
Constant speed compressor
●
SC comp. :
Scroll compressor